389790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 48

約数和(自身を含む): 1044576

約数和(自身を除く): 654786

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 61, 71, 90, 122, 142, 183, 213, 305, 355, 366, 426, 549, 610, 639, 710, 915, 1065, 1098, 1278, 1830, 2130, 2745, 3195, 4331, 5490, 6390, 8662, 12993, 21655, 25986, 38979, 43310, 64965, 77958, 129930, 194895, 389790]

約数ペア:

[(1, 389790), (2, 194895), (3, 129930), (5, 77958), (6, 64965), (9, 43310), (10, 38979), (15, 25986), (18, 21655), (30, 12993), (45, 8662), (61, 6390), (71, 5490), (90, 4331), (122, 3195), (142, 2745), (183, 2130), (213, 1830), (305, 1278), (355, 1098), (366, 1065), (426, 915), (549, 710), (610, 639)]